.myh{
  background: url('/static/img/bg_joint.png') no-repeat;
  background-size: contain;
  border: 1px solid black;
}
.my-img{
  width: 100px;
  height: 100px;
}
.my-img1{
  position: relative;
  width: 100px;
  height: 100px;
}